June 21, 2010─CHELMSFORD, MASS.–ZOLL Medical Corporation (Nasdaq GS: ZOLL), a manufacturer of resuscitation devices and related software solutions, announced today that a guest vacationing aboard Royal Caribbean Cruise Lines Ltd. vessel Oasis of the Seas was saved with the help of a ZOLL AED Plus®. It was the first time the unit was used aboard the 6,200-passenger mega-ship, the largest passenger liner in the world.

According to Steve Williams, RN, CEN, CFRN, Director of Medical Operations for Royal Caribbean Cruises Ltd., a guest collapsed on March 27 in the ship’s buffet area. “Fortunately a passing guest who is a physician witnessed the cardiac arrest, called for an AED, and started CPR,” he said. “A crew member brought the AED Plus, which the physician used to deliver a shock that converted the patient. The ship’s medical team arrived and took over patient care. A subsequent shock was delivered. The revived patient was transferred to a local hospital, underwent a stent procedure, and is now at home recovering.”

“The value Royal Caribbean places on passenger safety is commendable. By strategically placing AEDs throughout their entire fleet, Royal Caribbean realizes the value these life-saving devices can play in improving outcomes from sudden cardiac arrest when every second counts,” said Jonathan A. Rennert, President of ZOLL.

Over the past 24 months, Royal Caribbean has taken a pro-active approach and standardized on ZOLL resuscitation products throughout its entire 27-ship fleet. Ten AED Plus units are strategically placed aboard the Oasis of the Seas. In addition, ZOLL M Series® ALS defibrillators are in Royal Caribbean’s onboard infirmaries and each ship’s first response teams are outfitted with AED Pros®.

About Sudden Cardiac Arrest

SCA, an abrupt disruption of the heart’s function, which causes a lack of blood flow to vital organs, claims more than 325,000 lives each year in the U.S. It is the leading cause of unexpected death in the world and strikes without warning. Currently, only about 5 percent of victims survive; 95 percent will die from SCA.

About Royal Caribbean Cruises Ltd.

Royal Caribbean Cruises Ltd. is a global cruise vacation company that operates Royal Caribbean International, Celebrity Cruises, Pullmantur, Azamara Club Cruises and CDF Croisieres de France. The company has a combined total of 39 ships in service and three under construction. It also offers unique land-tour vacations in Alaska, Asia, Australia/New Zealand, Canada, Dubai, Europe and South America. Additional information can be found on www.royalcaribbean.com.

A NASDAQ Global Select company and a Forbes 100 Most Trustworthy Company in 2007, 2008, and 2009, ZOLL develops and manufactures its products in the United States, in California, Colorado, Illinois, Massachusetts, Pennsylvania, and Rhode Island. More than 400 direct sales and service representatives, 1,100 business partners, and 200 independent representatives serve our customers in over 140 countries around the globe. For more information, visit www.zoll.com.

Certain statements contained in this press release, including statements regarding the future business of the Company, and other statements contained herein regarding matters that are not historical facts, are “forward-looking” statements (as defined in the Private Securities Litigation Reform Act of 1995). Because such statements are subject to risks and uncertainties, actual results may differ materially from those expressed or implied by such forward-looking statements. Factors that could cause actual results to differ materially from those expressed or implied by such forward-looking statements include, but are not limited to, those factors discussed in the section entitled “Risk Factors” in the Company's Quarterly Report on Form 10-Q filed with the SEC on May 14, 2010. You should not place undue reliance on the forward looking statements in this press release, and the Company disavows any obligation to update or supplement those statements in the event of any changes in the facts, circumstances, or expectations that underlie those statements.